The diagram shows magnetic reversals observed along the Mid-Atlantic Ridge.
Magnetic reversals on the Mid-Atlantic Ridge.Short description, Magnetic reversals on the Mid-Atlantic Ridge.,Long description,
The diagram shows a section of the mid-Atlantic ridge and the lithosphere beneath it at three different times, labeled A, B, and C. Arrows show that the land is spreading to either side of the ridge. A key shows that normal magnetic polarity is colored yellow, orange, or red, and reversed magnetic polarity is white. At time A, the Mid-Atlantic Ridge is yellow and the land to either side is white. At time B, the Ridge is orange, flanked by white stripes and then yellow stripes, then more white. At time C, the Ridge is red, flanked by bands of white, orange, white, yellow, white.
Question
How do these magnetic reversals provide evidence of seafloor spreading?
Answer options with 4 options
A.
They form oceanic trenches where crust is subducted.
B.
They form volcanic mountain chains under the oceans.
C.
They confirm seismic activity from underwater earthquakes.
D.
They confirm that new crust forms along divergent boundaries.